How many letters does the top answer for “of or relating to hydropathy or its administration” have?

The most common answer is hydropathic (11 letters).

Crossword clue: of or relating to hydropathy or its administration

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

hydropathic 11 letters wn-def

of or relating to hydropathy or its administration

of or relating to or responsible for administration 50% similar → administrative